Please, if anyone knows algebra, and knows how to solve this and show steps. I will really appreciate it a ton. Please help me with this. I need it as soon as possible

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Which shows one way to determine the facts of x3+4x2+5x+20 by grouping

Acoin is tossed 4 times which of the following represents the probability of the coin landing on heads all 4 times